{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["Located_In", "Work_For", "OrgBased_In", "Kill"], "input": "A memorial to President Kennedy on the sixth floor of the former Texas Schoolbook Depository , from which Lee Harvey Oswald allegedly fired the shots that killed him , will open on Presidents Day , organizers say."}
{"Located_In": [], "Work_For": [], "OrgBased_In": [], "Kill": [{"subject": "Lee Harvey Oswald", "object": "President Kennedy"}]}